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glatten tatrs gamut @affita NATHNIELg'` ROBBIN S, JR., 0F ROCKPORT, MASSACHUSETTS. Laim man; No. Guest, .and .my 9, 1867.

IMPROVBD WINDLASS.

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TO ALL WHOM IT MAY( CONCERN:

Be it known that I, NATHANIEL Romains, Jr.,v of ltockport, in the county of Essex, in the State of Massnchusetts, have invented a new and improved Windlass; and I do hereby declaro that the following is a full and exact description thereof, reference being had to the accompanying drawings, making a part ot' this specification, and to the letters of reference marked thereon.

The'nature of my invention consists in using certain sectors and 'gear-wheels in combination with a wind- I lass, whereby, at times, an increascdrpower with slow motion may be gained, and at other times, with the isame apparatus, at pleasure, an increased speed with less power may be obtained.

In the accompanying drawings the application et' my invent-ion to a ships windlass is represented.

Figure 1 is a perspective view.

Figure 2L is'a section through the drum.

Figure 3 is a section through one cam.

Figure 4 is a rear view of the drum which contains the gear-wheels forincreasing the speed, and to, which the arms moving or moved by the gear-wheels'inay be fastened; its edge is a. concavesurface for holding the -chain by which the sectors are driven.

Figure 5 is a cross-section through the wiudlass and the working-gear.

Similar letters refer to similar' parts.

a is an ordinary windlass; b is an ordinary pawl; c is the pawl-bit; d d are the windlass-bits; e c are sectors, used with the ordinary ratchet' and palls, for-driving the windlass; f, a' drum, containing gear-wheels, carrying the chain and, at pleasure, attached to the arm in which the brakes are used7 or to the arm on the opposite side of 'the drum; g, a chain attached to the drum, and having one end attached to one sector while the other end is attached to the other sector; 71, an arm playing on the axis o-the drum f, though independent of it, and driven by the ordinary windlass-brakes; z' is a port-ion of a. gearwheel attached to thc arm It and moving with it. j is a gearwheel playing into the gear z'. It4 is free to slide laterally on its axis, so as to be unshipped; c is a gear-wheelfixed on its axis, which also forms the axis of' the gear-wheely1 Z is a gear-wheel playing into the gear-wheel r. It is fixed on its axis, and through it to the arm m outside ofthe drum f. The shaft which forms the axis of this gear is also the axis ot' the arm It, which plays freely over it, and the axis of the drum f, which plays freely over it. m is an arm moving with the gear-wheel Z, which can, at pleasure, be attached to and moved with the drumf. n is a standard 4for the support of one side of the workiiig-gear, the other side being supported by the pawl-bit; o o, brakes, of the ordinary kind, for heaving a windlass.

By the use of the sectors e e, the chain which carries the driving power is kept at a uniform distance' from the axis of the windlass, thus maintaining a uniformity of motion and the greatest power. The drumf serves asimilar purpose, with a similar result, in keeping the chain at a uniform distance from the axis over which the brakes play. The gear z', attached to the arm h, has a greater` radius. than the gear-wheel 7' into whchit' plays, thus causing a more rapid motion of the axis of j than isgiven to the axis of` the gear `The gear-wheel k has a greater radius than j, and moving with the saine axis, its circumference moves more rapidly,.

lwhich in turn playing into the gear-wheel Zot' less radius, gives still greater velocity to the axis of Z, and

through it to the arm m. i By this multiplicationof motion the arm m is made to move much faster than the arm L, and as I can at pleasure attach the drum f`to the arm L for slow motion, or to the arm m for rapid motion, I am enabledY to haul in lan anchor much more rapidly, after it has vbroken loose from itsv bcd and` Vrequires less power to move it than is possible in any other arrangement with which I am acquainted. I can accomplish this object'with two wheels instead of four, and I do not wishto 1lbe confined to any particular num ber of gear-wheels.`

In practise the slots represented in the drum flare covered, so as to prevent the entrance of water or snow into the drum. To attach the arm L and tho armm to the drumf, I use any convenient device suitable for the purpose. u v WhatvI claim as my invention, and desire to secure by Letters Patent, isl 1. The combination ofthe drumfwith the sectors c e, the whole arranged with pawls and brakes, in connection with a windlass, substantially-as described.

l 2. The use ofV the gear-wheels ,j, c, and' Z, in combination with the arms h and m and the drumf, substanA tially as and for'the purposes set forth. Y

` NATHL ROBBINS, Je.

Witnesses:

HENRY F. FRENCH, Oris F. CMPP. 

